Rayford Road Municipal Utility District — NPDES permit TX0078263: limits, due date and EPA's record

Sewage treatment plant, major discharger, Oak Ridge North, Texas. NPDES permit TX0078263, in force until Jun 19, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (21)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	monthly minimum	≥ 4 mg/L	all year
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily average	≤ 15 mg/L	all year
Solids, total suspended	daily maximum	≤ 40 mg/L	all year
Solids, total suspended	daily average	≤ 119 lb/d	all year
Nitrogen, ammonia total [as N]	daily average	≤ 3 mg/L	all year
Nitrogen, ammonia total [as N]	daily maximum	≤ 10 mg/L	all year
Nitrogen, ammonia total [as N]	daily average	≤ 24 lb/d	all year
Copper, total [as Cu]	daily average	≤ .0987 mg/L	all year
Copper, total [as Cu]	daily maximum	≤ .209 mg/L	all year
Copper, total [as Cu]	daily average	≤ .782 lb/d	all year
Flow, in conduit or thru treatment plant	daily average	≤ .95 MGD	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Chlorine, total residual	monthly minimum	≥ 1 mg/L	all year
Chlorine, total residual	monthly maximum	≤ 4 mg/L	all year
E. coli	daily average	≤ 63 MPN/100mL	all year
E. coli	daily maximum	≤ 200 MPN/100mL	all year
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 10 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 25 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 79 lb/d	all year

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0078263 · MCP: https://passage-data.com/mcp